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Schema export with less space on windows [message #615120] Fri, 30 May 2014 07:25 Go to next message
Jack14
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Registered: December 2011
Location: INDIA
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Hi ,

i want to take schema export with 150gb in size but have only 70 gb space on windows. I dont think export will run suceessful
with less space.Is there any alternate way to accomplish this task ?

following is the command i am planning to use

expdp schemas=DROWN directory=EXP_MAY30  compression=metadata_only  parallel=4 dumpfile=DROWN_%U.dmp logfile=exp_30.log  

Method used is Datapump export.

Thanks,
Jack
Re: Schema export with less space on windows [message #615124 is a reply to message #615120] Fri, 30 May 2014 08:08 Go to previous messageGo to next message
John Watson
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Run expdp with the ESTIMATE parameter, and you will find how much space will be needed.
--update and ESTIMATE_ONLY=YES

[Updated on: Fri, 30 May 2014 08:10]

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Re: Schema export with less space on windows [message #615125 is a reply to message #615120] Fri, 30 May 2014 08:09 Go to previous messageGo to next message
BlackSwan
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>compression=metadata_only
only DDL statements (no data) is contained in dump file so it should fit in 70 GB
Re: Schema export with less space on windows [message #615127 is a reply to message #615125] Fri, 30 May 2014 08:11 Go to previous messageGo to next message
John Watson
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I think the issue is that unless Jack has bought the Advanced Compression Option, the metadata is all that he can compress.
Re: Schema export with less space on windows [message #615130 is a reply to message #615125] Fri, 30 May 2014 08:27 Go to previous messageGo to next message
cookiemonster
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BlackSwan wrote on Fri, 30 May 2014 14:09
>compression=metadata_only
only DDL statements (no data) is contained in dump file so it should fit in 70 GB


You're confusing the compression parameter with the content one.
Re: Schema export with less space on windows [message #615131 is a reply to message #615130] Fri, 30 May 2014 08:33 Go to previous messageGo to next message
BlackSwan
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>You're confusing the compression parameter with the content one.
You are correct.
I just woke up & need another cup of tea.
Re: Schema export with less space on windows [message #615139 is a reply to message #615131] Fri, 30 May 2014 10:24 Go to previous messageGo to next message
Jack14
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Can i have answer to my question ?
Re: Schema export with less space on windows [message #615140 is a reply to message #615139] Fri, 30 May 2014 10:28 Go to previous messageGo to next message
John Watson
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What was the result of the estimate that I suggested you run?
Re: Schema export with less space on windows [message #615184 is a reply to message #615140] Sat, 31 May 2014 00:41 Go to previous messageGo to next message
Jack14
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Registered: December 2011
Location: INDIA
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John,
sorry to tell you that i have put this task on hold due to lack of space on server and sent a note to wintel team to provide more space on server ,so no need to hurry up.Moreover we have a long weekend leave coming up. So i can't give you the estimation size of dump file now. I will update you once i continue to work on this.

Thanks for your interest shown though.

Thanks,
Jack
Re: Schema export with less space on windows [message #615186 is a reply to message #615184] Sat, 31 May 2014 00:48 Go to previous messageGo to next message
Michel Cadot
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Remember that the next time you will ask for a question.
We may also have some time off and so not immediately answer you and so be patient, carefully read the posts we have already given to you and answer our questions.

Re: Schema export with less space on windows [message #615393 is a reply to message #615184] Tue, 03 June 2014 05:59 Go to previous messageGo to next message
Jack14
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Schema size is 138 GB

SQL> select sum(bytes)/1024/1024/1024 from dba_segments where owner='DROWN';

SUM(BYTES)/1024/1024/1024
-------------------------
               138.154663

Using estimate_only=yes

Total estimation using BLOCKS method: 84.75 GB
Job "DROWN"."SYS_EXPORT_SCHEMA_01" successfully completed at 11:56:35

I am planning to use Network_Link parameter to import source schema dump into target database.
Is it advisable to use this parameter to import schema to target database with 85 GB size.Also
would like to know how long it would take to complete this schema refresh using netwrok_link parameter ?

Thanks,
Jack

Re: Schema export with less space on windows [message #615394 is a reply to message #615393] Tue, 03 June 2014 06:15 Go to previous messageGo to next message
Michel Cadot
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This is the estimated dump size not the estimated size in the target database.
If you want to use network_link, this estimation is useless for you.

Re: Schema export with less space on windows [message #615395 is a reply to message #615394] Tue, 03 June 2014 06:22 Go to previous messageGo to next message
Jack14
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Michel,
Quote:
This is the estimated dump size not the estimated size in the target database.

yes i am aware of it .

based on estimated dump file size can you tell me estimated time ?

Thanks,
jack
Re: Schema export with less space on windows [message #615402 is a reply to message #615395] Tue, 03 June 2014 07:52 Go to previous messageGo to next message
Michel Cadot
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No, no one can tell you.

Re: Schema export with less space on windows [message #615406 is a reply to message #615402] Tue, 03 June 2014 08:56 Go to previous messageGo to next message
Jack14
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Registered: December 2011
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Michel,
Thanks for your responds.

I took a export back of schema with estimated size of 84.5 GB but it occupied 102 GB space on windows drive.

here is the export command i used to take schema backup.
expdp system directory=EXP_MAY30 dumpfile=exp_schema.dmp schemas=DROWN logfile=exp_schema.log  

Could you please clarify my doubt ?

Thanks,
jack
Re: Schema export with less space on windows [message #615407 is a reply to message #615406] Tue, 03 June 2014 09:03 Go to previous messageGo to next message
Michel Cadot
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1/ It is an estimation and only an estimation
2/ Space occupied on Windows disk on disk format (if you look at file properties you will see 2 size, file size and size on disk, check them)

Re: Schema export with less space on windows [message #615408 is a reply to message #615407] Tue, 03 June 2014 09:21 Go to previous messageGo to next message
Jack14
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Michel,

Does this kind of extra space occupy ( apart from what estimated using ESTIMATE_ONLY=YES) happens only on windows server or
on Unix server as well ?

Thanks,
jack

Re: Schema export with less space on windows [message #615412 is a reply to message #615408] Tue, 03 June 2014 10:04 Go to previous messageGo to next message
Michel Cadot
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I can't say for all file systems but it is a characteristic of Windows ones (and so it provides both values).

Re: Schema export with less space on windows [message #615413 is a reply to message #615412] Tue, 03 June 2014 10:16 Go to previous messageGo to next message
Jack14
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Thank you Michel for your clarification
Re: Schema export with less space on windows [message #615478 is a reply to message #615413] Wed, 04 June 2014 08:58 Go to previous messageGo to next message
Jack14
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Have anybody worked on Network_link parameter ? i am planning to use this parameter to import schema with 100 GB into target database.
Could you tell me what is the suitable time to run this import with network_link parameter ?

Thanks,
Jack
Re: Schema export with less space on windows [message #615479 is a reply to message #615478] Wed, 04 June 2014 09:01 Go to previous messageGo to next message
BlackSwan
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>Could you tell me what is the suitable time to run this import with network_link parameter ?
It depends upon speed of the network link & how busy both the source & target systems are.
You can test & produce guessitmate by transferring a 5GB file between the 2 & then multiply the time by at least 20.
Re: Schema export with less space on windows [message #615485 is a reply to message #615479] Wed, 04 June 2014 11:28 Go to previous messageGo to next message
Jack14
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Blackswan,

Thanks for letting me know how to test a file movement between two network servers.
Re: Schema export with less space on windows [message #615488 is a reply to message #615485] Wed, 04 June 2014 11:37 Go to previous message
Michel Cadot
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cp/scp/ftp/sftp...
What about Google?



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